Freeze break request for Vinagre: Styling fix

[David King <amigadave amigadave com>]

Vinagre has a GtkHPaned which separates the favourites panel from the 
main display. By default, the focus is forcibly set to the GtkHPaned, 
which looks ugly (a big blue bar, both in Adwaita and without a theme).  
This can be fixed by removing the call to gtk_widget_set_focus(), as in 
the patch below:

https://bugzilla.gnome.org/show_bug.cgi?id=646235
http://bugzilla-attachments.gnome.org/attachment.cgi?id=184853

OK to push?

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